JP3986728B2 - Transfer rubber drum - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transfer drum made of a belt-shaped rubber material, and more particularly to a transfer drum improved in supply failure with respect to changes in the width direction of the belt-shaped rubber material.
[0002]
[Prior art]
In general, when a carcass material (strip-shaped rubber material) wound up or wound around a bead has multiple layers in tire molding, there are steps at both ends of each layer from the viewpoint of failure of the molded tire or durability. A material with a different width is used so that this occurs.
[0003]
Therefore, when a plurality of carcass materials as tire constituent materials are stacked and pasted on the tire molding drum, individual stock rolls each having a strip-like material wound up to a predetermined width are supplied to a molding machine servicer for winding. I was using it.
[0004]
For this reason, in the process of cutting the belt-shaped rubber material unwound from the raw fabric roll, it is necessary to separately prepare materials to be sent to the next process, and also in the molding process, it is necessary to provide a servicer according to each material. In addition, there is a problem that the equipment cost is high and the required space needs to be increased, and it takes time and labor to supply the belt-shaped material and the winding work, and the work efficiency is extremely poor.
[0005]
Therefore, conventionally, a belt-shaped rubber material of the same width is unwound from the raw roll, cut to the width of the forming drum, and then transferred to a conveying conveyor arranged in an orthogonal direction and conveyed to the forming drum side. Have been proposed.
[0006]
However, the direction in which the band-shaped rubber material that has been cut in a predetermined direction is changed in the direction orthogonal to each other and transferred to the conveyor conveys a problem in sticking accuracy and the work efficiency.
[0007]
Therefore, a plurality of strip-shaped rubber materials (rubber sheets, carcass materials, etc.) that are further cut into lengths are laminated and wound around the outer peripheral surface of the drum body in order with steps, and the drum body is moved to the molding drum side. In this case, a transfer drum has been used in which a laminated body of belt-shaped rubber material is wound around a molding drum.
[0008]
[Problems to be solved by the invention]
However, in the drum body, since the carcass material having a different width is adsorbed on the drum surface by an adsorbing force such as vacuum as described above, there is a problem in reliability with respect to the width change of the carcass material.
[0009]
That is, the plurality of suction holes provided on the drum surface for adsorbing the carcass material of different widths are formed so as to be able to suck the entire width of the belt-like rubber material of different widths. When a rubber material is adsorbed by a plurality of suction holes provided on the drum surface, and then wound while adsorbing a material having a different width from that of the second layer of the belt rubber material and the third layer of the belt rubber material, the first layer When adsorbing a narrow band-shaped rubber material with an adsorption hole, the adsorption hole that does not adsorb sucks the air.
[0010]
As a result, the suction force of the vacuum that sucks in the air decreases rapidly, and the second layer and third layer material adsorption force decreases and peels when wound around the drum body. There has been a problem that a problem such as supply failure occurs and the reliability of adsorption against the width change of the material is lowered.
[0011]
The object of the present invention is to effectively prevent the adhering failure with respect to the change in the width direction of the material and the supply failure to the tire molding drum when the belt-shaped rubber materials of different widths are sequentially laminated and wound on the drum body. An object of the present invention is to provide a transfer drum made of a belt-like rubber material that can improve the reliability of adsorption due to the above.
[0012]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a drum body formed in a hollow cylindrical shape, and a partition wall between the outer peripheral surface of the rotation support shaft inserted into the center portion and the inner wall of the drum body. A plurality of hollow chambers are defined in the circumferential direction, a plurality of suction holes communicating with the hollow chambers are formed on the surface of the drum body, and a suction passage connected to suction means is formed inside the rotation support shaft. The gist of the invention is that the suction passage and the partitioned hollow chamber are connected by a plurality of communication holes provided with an open / close switching valve.
[0013]
Further, according to the present invention, a rotation support shaft having a suction passage connected to suction means is inserted into a central portion of a drum body formed in a hollow cylindrical shape, and an inner wall of the drum body and an outer peripheral surface of the rotation support shaft A plurality of hollow chambers in a circumferential direction through a partition wall, and a plurality of suction holes communicating with the hollow chambers are formed on the surface of the drum main body, and the rotation support shaft in the drum main body A cylindrical pressure chamber that communicates with the suction passage is formed in a part of the outer periphery, a communication hole that communicates with each of the partitioned hollow chambers is formed on the wall surface of the pressure chamber, and the communication hole is opened and closed. The gist is that an open / close switching valve is provided.
[0014]
Further, according to the present invention, a rotation support shaft provided with a suction passage connected to suction means is inserted into a central portion of a drum body having a plurality of suction nozzles formed on the surface, and suction of the plurality of suction nozzles and the rotation support shaft is performed. The gist of the invention is that the passage is connected by a plurality of suction pipes, and an opening / closing switching valve is provided at a connection portion between the suction passage and each suction pipe.
[0015]
The present invention is configured as described above, uses the suction force of the belt-like rubber material adsorbed on the surface of the drum body, the suction force on the suction side of the blower motor, and the suction holes provided on the surface of the drum body. The passage connected to the suction passage of the blower motor is provided with an open / close switching valve that can individually control the suction force of the suction hole ON and OFF, so that suction failure due to changes in the width direction of the material and supply to the tire molding drum Defects can be effectively prevented, and the reliability of adsorption by the drum body can be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0017]
1 is a partial cross-sectional view of a state in which a transfer drum showing a first embodiment of the present invention is attached, FIG. 2 is a side view taken along the line AA in FIG. 1, and FIG. 3 is a view taken along the line BB in FIG. 4 is a side view taken along the line CC of FIG. 1, and a blower motor 2 constituting a suction means to be described later is provided at the center of the drum body 1 formed in the hollow cylindrical shape of the transfer drum. A rotation support shaft 5 connected to the suction port 3 through a suction pipe 4 is inserted.
[0018]
The rotation support shaft 5 is rotatably supported by a portal frame 7 via a bearing member 6, and the portal frame 7 is provided with guide rails 10a laid on frames 9a and 9b on the support shafts 8a and 8b. A traveling frame 11 that is movable along 10 b is suspended through a fixing member 12.
[0019]
Between the inner wall 1a of the drum body 1 and the outer peripheral surface of the rotation support shaft 5, a plurality of hollow chambers 14 are partitioned and formed in the circumferential direction via a plurality of partition walls 13, as shown in FIG. A plurality of suction holes 15 communicating with the hollow chambers 14 are formed on the surface of the drum body 1.
[0020]
A cylindrical pressure chamber 17 communicating with a suction passage 16 formed along the longitudinal direction inside the rotation support shaft 5 is formed in a part of the outer periphery of the rotation support shaft 5 in the drum body 1. A plurality of communication holes 18 that communicate with the partitioned hollow chambers 14 are formed on the side wall surface of the pressure chamber 17. The plurality of communication holes 18 are provided with an open / close switching valve 19 for opening / closing the communication hole 18. The open / close switching valve 19 is normally closed, and a rod-shaped rubber material (not shown) is attracted and held by a rod. The open / close cylinders 21 a and 21 b are opened via the valve 20, and the suction force of the pressure chamber 17 that has been pressurized is applied to each hollow chamber 14.
[0021]
The suction passage 16 formed along the longitudinal direction inside the rotary support shaft 5 is connected to the suction port 3 of the blower motor 2 via the rotary seal 22 on one end side of the rotary support shaft 5. It is connected to the.
[0022]
Further, as shown in FIGS. 1 and 4, a rotation drive mechanism 23 that rotates the rotation support shaft 5 and the drum body 1 is provided on the other end side of the rotation support shaft 5. , A pulley 24 provided on the other end of the rotation support shaft 5, a rotation drive motor 25 installed on the traveling frame 11, a pulley 26 attached to a rotation shaft 25 a of the motor 25, and the pulley 24. And a drive belt 27 wound around 26 and 26.
[0023]
The present invention is configured as described above, and when a belt-like rubber material (carcass material) having a different width is wound around the drum body 1 in sequential steps, the suction pipe 4 connected to the suction port 3 of the blower motor 2 is provided. The suction force of the blower motor 2 is applied to the pressure chamber 17 through the suction passage 16 of the rotation support shaft 5.
[0024]
For example, when the belt-shaped rubber material having a narrow width of the first layer is adsorbed to the center portion of the drum body 1, the belt-shaped rubber material is adsorbed by the plurality of adsorption holes 15 located at the center of the drum body 1. Further, only the open / close switching valve 19 of the communication hole 18 communicating with the hollow chamber 14 partitioned by the partition wall 13 is opened by the open / close cylinder 21b, and the hollow chamber in which the belt-shaped rubber material is adsorbed by the suction force in the pressure chamber 17 14 is made to act on the surface of the drum body 1.
[0025]
Next, when adsorbing a wide band-shaped rubber material, in order to adsorb the band-shaped rubber material by a plurality of adsorbing holes 15 located on both sides in the longitudinal direction of the drum body 1, The open / close switching valve 19 of the communication hole 18 that communicates with the hollow chamber 14 is opened by the open / close cylinder 21b, and the suction force in the pressure chamber 17 is applied to the hollow chambers 14 on both sides so that a wide rubber band material is applied to the drum body 1. Adsorb to the surface of
[0026]
In this way, when a plurality of belt-shaped rubber materials having different widths are sequentially stacked on the drum body 1 and wound, the opening / closing switching valve 19 is controlled via the pressure chamber 17 by the suction force of the blower motor 2. However, by acting on the hollow chambers 14 formed in a plurality of sections, the plurality of suction holes 15 provided on the drum surface can be reliably sucked and transferred to the next process and transferred.
[0027]
Next, FIG. 6 is a partial cross-sectional view of a state in which the transfer drum 1 according to the second embodiment of the present invention is attached. In this embodiment, the rotation support shaft 5 inserted through the central portion of the transfer drum 1 is shown. A plurality of hollow chambers 14 are defined in a circumferential direction between the outer peripheral surface of the drum body 1 and the inner wall 1a of the drum body 1 through a partition wall (not shown) similar to that of the first embodiment, A plurality of suction holes 15 communicating with the hollow chamber 14 are formed on the surface.
[0028]
In addition, a suction passage 16 connected to the suction port 3 of the blower motor 2 constituting the suction means via the suction pipe 4 is formed inside the rotation support shaft 5, and the suction passage 16 and each of the divided hollows are formed. The chamber 14 is connected to a plurality of communication nozzles 28 each having an on / off switching valve 19a. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.
[0029]
With this configuration, the large number of suction holes 15 formed on the surface of the drum body 1 can be controlled to open or close the open / close switching valves 19a individually or as a group of predetermined regions, thereby reducing the width of the belt-shaped rubber material. It can be securely adsorbed and wound in correspondence with the above.
[0030]
A plurality of suction nozzles (not shown) are formed on the surface of the drum body formed in a hollow cylindrical shape, and the suction passage is connected to the center of the drum body via the suction pipe as in the above embodiment. A plurality of suction nozzles and suction passages of the rotation support shaft are connected by a plurality of suction pipes, and an open / close switching valve is provided at a connection portion between the suction passages and each suction pipe. It is also possible to do.
[0031]
Other configurations are the same as those in the first embodiment, and thus the same reference numerals are given and description thereof is omitted.
[0032]
By comprising in this way, like the said embodiment, it can adsorb | suck reliably according to the width | variety of a strip | belt-shaped rubber material, and can wind.
[0033]
【The invention's effect】
According to the present invention, a rotation support shaft having a suction passage connected to suction means is inserted into the center of the drum body formed in a hollow cylindrical shape as described above, and the inner wall of the drum body and the rotation support shaft are connected to each other. A plurality of hollow chambers are defined in a circumferential direction between the outer peripheral surface and a partition wall, and a plurality of suction holes communicating with the hollow chambers are formed on the surface of the drum main body to support rotation within the drum main body. A cylindrical pressure chamber communicating with the suction passage is formed in a part of the outer periphery of the shaft, and communication holes communicating with the partitioned hollow chambers are formed on the wall surface of the pressure chamber. An open / close switching valve is provided to open and close the suction, and the suction force of the belt-shaped rubber material adsorbed on the surface of the drum body uses the suction force on the suction side of the blower motor, and the suction hole and blower motor provided on the surface of the drum body In the passage connected to the suction passage of By providing an open / close switching valve that can individually control ON / OFF of the suction force of the suction hole, it is possible to effectively prevent suction failure due to changes in the width direction of the material and supply failure to the tire molding drum. There is an effect that can improve the reliability.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing a state in which a transfer drum according to a first embodiment of the present invention is attached.
FIG. 2 is a side view taken along the line AA in FIG.
FIG. 3 is a cross-sectional view taken along the line BB in FIG. 1;
4 is a side view taken along the line CC in FIG. 1. FIG.
FIG. 5 is a side view taken along the line DD in FIG. 2;
FIG. 6 is a partial cross-sectional view of a state in which a transfer drum showing a second embodiment of the present invention is attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drum main body 1a Inner wall 2 Blower motor 3 which comprises a suction means 4 Suction port 4 Suction pipe 5 Rotation support shaft 6 Bearing member 7 Portal frame 8a, 8b Support shaft 9a, 9b Frame 10a, 10b Guide rail 11 Traveling frame 12 Fixing member 13 Partition Wall 14 Hollow Chamber 15 Suction Hole 16 Suction Passage 17 Pressure Chamber 18 Communication Hole 19 Open / Close Switch Valve 20 Rod 21a, 21b Open / Close Cylinder 22 Rotary Seal 23 Rotation Drive Mechanism 24 Pulley 25 Rotation Drive Motor 25a Rotation Shaft 26 Pulley 27 Drive Belt 28 Communicating nozzle

Claims (3)

A plurality of hollow chambers are defined in the circumferential direction through a partition wall between the outer peripheral surface of the rotation support shaft inserted into the center portion and the inner wall of the drum main body inside the drum main body formed in a hollow cylindrical shape. In addition, a plurality of suction holes communicating with the hollow chamber are formed on the surface of the drum body, and a suction passage connected to suction means is formed inside the rotation support shaft. A transfer drum made of a belt-shaped rubber material formed by connecting a hollow chamber with a plurality of communication holes provided with an open / close switching valve. A rotation support shaft having a suction passage connected to suction means is inserted through the center of the drum body formed in a hollow cylindrical shape, and a partition wall is provided between the inner wall of the drum body and the outer peripheral surface of the rotation support shaft. Forming a plurality of hollow chambers in the circumferential direction through the plurality of suction holes that communicate with the hollow chambers on the surface of the drum body, a part of the outer periphery of the rotation support shaft in the drum body, A cylindrical pressure chamber that communicates with the suction passage is formed, a communication hole that communicates with each of the partitioned hollow chambers is formed on the wall surface of the pressure chamber, and an open / close switching valve that opens and closes the communication hole is provided. A transfer drum made of rubber band material. A rotation support shaft having a suction passage connected to the suction means is inserted into the center of the drum body having a plurality of suction nozzles formed on the surface, and a plurality of suction nozzles and suction passages of the rotation support shaft are sucked into the suction passage. A transfer drum made of a belt-shaped rubber material, which is connected by a pipe and is provided with an open / close switching valve at a connection portion between the suction passage and each suction pipe.

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